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兩正弦波的合成波
Author:
紀老師
這是描述兩相同週期的正弦波,其合成波也是正弦波的動畫
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兩位數除以一位數（一）
球體建築師
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
兩位數加法
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gjh-g03-01 和的平方公式
S3 Volume and Area
完整地球儀
滑桿應用
Locus: P equidistant from two fixed points
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Prism
Random Variables
Means
Straight Lines
Similar Triangles